JOURNAL OF APPLIED POLYMER SCIENCE
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2016
·Vol. 134
·期 12
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IF 1.866
Qing Zhang,Wan-Xia Huang,Gan-Ji Zhong
Poly(methyl methacrylate) grafted silica (SiO 2 -g-PMMA) was synthesized via in situ suspension polymerization. To achieve better uniform dispersion, hexadecyltrimethylammonium bromide (CTAB) was introduced into xylene to manipulate SiO 2 aggregation. SiO 2 -g-PMMA or SiO 2 was incorporated into PMMA matrix by in situ polymerization to prepare PMMA-based nanocomposites. The effect of CTAB amount, in the range 0–35 wt %, on the modification was evaluated by DLS, TGA, and FTIR. Furthermore, morphology, optical, mechanical, and thermal properties of PMMA nanocomposites was characterized by SEM, UV–vis, DMA, and TGA. Owing to surface functionalization, SiO 2 -g-PMMA exhibited far more excellent compatibility and dispersion in matrix compared with SiO 2 . Surface hardness and thermal properties of nanocomposites were enhanced significantly under the premise in high transparency. It is expected that transparent nanocomposites with promising scratch-resistance could have wide applications, such as airplane shielding window and daily furniture. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44612.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2016
·Vol. 134
·期 11
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IF 1.866
Zijian Gao,Zhe Yu,Chang Huang,Lijie Duan,Guang Hui Gao
In this investigation, carboxymethyl cellulose (CMC)-reinforced poly(vinyl alcohol) (PVA) were prepared with trimethylol melamine as a chemical crosslinker. The structure and property of hydrogels were measured by Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), texture analysis, and rheometry. The FTIR spectra demonstrated that the etherification reaction successfully occurred in the PVA–CMC hydrogels, and the SEM figures exhibited the homogeneous porous structure of the CMC–PVA hydrogels. The compression strength of the PVA–CMC hydrogels was 15 times higher than that of the PVA hydrogels. Moreover, the PVA–CMC hydrogels exhibited a higher storage modulus than that of the PVA hydrogels; this illustrated better elasticity for the PVA–CMC hydrogels. As a result, CMC-modified PVA hydrogels with high mechanical behavior will broaden the potential applications of hydrogels, such as in wound dressings, facial masks, and skin-protection layers. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44590.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2016
·Vol. 133
·期 44
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IF 1.866
Wenwen Wang,Ying Lu,Mengying Luo,Qinghua Zhao,Yuedan Wang,Qiongzhen Liu,Mufang Li,Dong Wang
A zwitterionic poly(vinyl alcohol- co -ethylene) (PVA- co -PE) nanofiber membrane for resistance to bacteria and protein adsorption was fabricated by the atom transfer radical polymerization of sulfobetaine methacrylate (SBMA). The PVA- co -PE nanofiber membrane was first surface-activated by α-bromoisobutyryl bromide, and then, zwitterionic SBMA was initiated to polymerize onto the surface of nanofiber membrane. The chemical structures of the functionalized PVA- co -PE nanofiber membranes were confirmed by attenuated total reflectance–Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. The morphologies of the PVA- co -PE nanofiber membranes were characterized by scanning electron microscopy. The results show that the poly(sulfobetaine methacrylate) (PSBMA) was successfully grafted onto the PVA- co -PE nanofiber membrane, and the surface of the nanofiber membrane was more hydrophilic than that of the pristine membrane. Furthermore, the antibacterial adsorption properties and resistance to protein adsorption of the surface were investigated. This indicated that the PSBMA-functionalized surface possessed good antibacterial adsorption activity and resistance to nonspecific protein adsorption. Therefore, this study afforded a convenient and promising method for preparing a new kind of soft and nonwoven dressing material with antibacterial adsorption and antifouling properties that has potential use in the medical field. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 44169.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2016
·Vol. 133
·期 41
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IF 1.866
Wei Mao,Shouhai Li,Mei Li,Xuejuan Yang,Jian Song,Mei Wang,Jianling Xia,Kun Huang
A novel bio-based and flame-retardant UV-curable vinyl ester resin (VER) monomer named Diglycidyl ester of maleinized dipentene modified with dibutyphosphate and methacrylic anhydride (MDDMD) was synthesized from industrial dipentene via Diels-Alder reaction, glycidylation, epoxy ring-opening reaction, and esterification. Its chemical structures were characterized by Fourier transform infrared (FTIR) analysis and proton nuclear magnetic resonance ( 1 H-NMR). In order to improve its flexibility, we prepared a series of copolymers under UV light radiation by mixing it with certain proportions of poly(ethylene glycol) dimethacrylate-200 (PEGDMA-200) which contained flexible groups. Their tensile property, curing degrees (CD), hardness, limiting oxygen index (LOI), dynamic mechanical thermal properties, and thermostability were all investigated. The cured mixed resins have a relatively high tensile strength of 10.05 MPa and curing degrees up to 92.5%. Both hardness (range: 50 to 23 HD) and LOI (range: 22.8% to 24.4%) of cured resins are improved with the increase of MDDMD content. Dynamic mechanical analysis (DMA) shows that their glass transition temperatures rise with the increase of MDDMD content. Thermogravimetric analysis (TGA) shows that the thermal stability of cured resins is enhanced with the increase of PEGDMA-200 content, as the main thermal initial decomposition temperatures are all above 260 °C and char yield at 800 °C are above 18.10%. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 44084.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2016
·Vol. 133
·期 42
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IF 1.866
Yu Zhang,Jia Song,Hongling Chen
The purpose of the present work was to develop a fragrance encapsulation system using polyacrylate/paraffin microcapsules. The Polyacrylate/paraffin microcapsules were fabricated by the method of suspension polymerization in Pickering emulsion. Morphology, size distribution, and thermal resistance of polyacrylate/paraffin microcapsules were investigated by scanning electron microscopy, light scattering particle size analyzer, and thermogravimetric analyzer. Results indicated that the crosslinked PMMA/paraffin microcapsules and P(MMA-co-BMA)/paraffin microcapsules prepared under optimal conditions presented regular spherical shape and similar size distribution. The crosslinked P(MMA-co-BMA)/paraffin microcapsules exhibited better thermal stability, with a thermal resistance temperature up to 184 °C. Fragrance microcapsules were prepared by encapsulating fragrance into crosslinked P(MMA-co-BMA)/paraffin microcapsules. The prolonged release performance of fragrance microcapsules was measured by ultraviolet-visible near-infrared spectrophotometer. 63.9% fragrance was retained after exposing fragrance microcapsules in air for 3 months, and the fragrance continued to release over 96 h in surfactant solution (sodium lauryl sulfonate, 20 wt %). © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 44136.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2016
·Vol. 133
·期 40
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IF 1.866
Yongjun Sun,Chengyu Zhu,Yanhua Xu,Huaili Zheng,Xuefeng Xiao,Guocheng Zhu,Mengjiao Ren
Cationic polyacrylamides (CPAMs) synthesized by thermal, ultrasonic, microwave, and UV initiation were characterized through magnetic resonance hydrogen spectroscopy ( 1 H NMR), Fourier transform infrared spectra, scanning electron microscopy, and thermal gravimetric analysis. The CPAMs for flocculation and dewatering of alum sludge produced through drinking water treatment were evaluated based on the residual turbidity of the supernatant, dry solid content, mean volume diameter and floc size distribution, fractal dimension of the flocs, and zeta potential as a function of flocculant dosage. Comparisons of the characteristics and performance of CPAMs synthesized through different initiation methods were systematically conducted. Flocculation and dewatering test results demonstrated that CPAMs synthesized through microwave and UV initiation had better flocculation performance and dewatering capability than those synthesized through thermal and ultrasonic initiation. All four CPAMs exhibited a similar final floc size distribution but different mean volume diameters and floc structures. The fractal dimension of the flocs and the zeta potential were in the following order: CPAM3 (microwave initiation) > CPAM4 (UV initiation) > CPAM1 (thermal initiation) > CPAM2 (ultrasonic initiation). Discussions on fractal dimension and zeta potential indicated that the electrostatic patches model and adsorption/bridging effect mechanisms played the main role in the formation of sludge flocs. Lastly, microwave and UV initiation were found to be alternative and recommendable initiation methods for the synthesis of CPAMs with improved flocculation performance and sludge dewatering capability. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 44071.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2016
·Vol. 133
·期 34
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IF 1.866
Jie Chen,Xiaoying Li,Yigang Wang,Jinrui Huang,Ke Li,Xiaoan Nie,Jianchun Jiang
A novel plasticizer epoxidized dimeric acid methyl ester (EDAMe) based on rubber seed oil was synthesized. Chemical structure of EDAMe was characterized by Fourier transform infrared (FTIR) and gel permeation chromatography (GPC). Effects of EDAMe as secondary plasticizer and its substitution of commercial plasticizer dioctyl terephthalate (DOTP) in soft poly(vinyl chloride) (PVC) films were studied. The thermal properties, mechanical properties and migration stabilities of PVC films were explored with DMA, TG, TG–FTIR, dynamic thermal stability analysis, tensile and migration tests. The results indicated that the epoxidized rubber seed oil based ester has significantly higher thermal stability than DOTP. When DOTP was substituted with 20% (m/m) EDAMe, the results of initial decomposition temperature ( T i ), 10% and 50% mass loss temperatures ( T 10 and T 50 ), and the first maximum weight-loss temperature rate ( T P1 ) reached 267.2 °C, 263.5 °C, 307.3 °C and 298.9 °C, respectively. Furthermore, flexibility of the obtained PVC films enhanced significantly with the adding of EDAMe. The migration stabilities of EDAMe was also investigated and showed good migration resistance. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43668.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2017
·Vol. 134
·期 43
·45468
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IF 1.86
Li Zhang,Lin Chen,Huan Zhang,Yongzhen Yang,Xuguang Liu
Thermosensitive magnetic surface molecularly imprinted polymer microspheres based on thermosensitive monomer n -isopropylacrylamide (NIPAM) are applied for the recognition of 5-fluorouracil (5-FU). A computational analysis is used to predict the interaction sites between 5-FU and NIPAM, the stoichiometry of the synthesis procedure, and the affinity of imprinted cavities toward 5-FU. Due to hydrogen bond interactions, a stable complex configuration of 5-FU and NIPAM shows a binding energy of −46.50 kJ/mol confirming the suitability of imprinting 5-FU into thermosensitive polymer network. After optimization, the appropriate stoichiometry of 5-FU to NIPAM is set to 1:4 during the preparation process. The simulated imprinted cavities show affinity toward 5-FU, with a binding energy of −112.24 kJ/mol. A preliminary experimental evaluation for the drug recognition of thermosensitive magnetic surface molecularly imprinted polymer microspheres is made, obtaining an adsorption capacity of 21.72 mg/g at 25 °C. Pseudo-second-order kinetics well describes the adsorption process. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45468.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2017
·Vol. 134
·期 42
·45422
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IF 1.86
Wen-Ze Qiu,Yong Du,Yan Lv,Hao-Cheng Yang,Zhi-Kang Xu
Thin-film composite (TFC) nanofiltration (NF) membranes were fabricated via the codeposition of catechol (CCh) and polyethyleneimine (PEI) followed by subsequent interfacial polymerization with trimesoyl chloride (TMC) on the surface of polysulfone ultrafiltration substrates. The detailed structures and surface properties were characterized by X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy, ζ potential analysis, and water contact angle measurement. The surface properties, including the roughness, hydrophilicity, surface potential, and NF performances, were facilely tuned through variation of the codeposition time of CCh–PEI for the prepared TFC membranes. The optimized membrane achieved a high rejection (ca. 93%) of MgCl 2 with a flux of around 31 L m −2 h −1 under 0.7 MPa. The results also reveal that the codeposition process endowed the final membranes with much better structural stability in alcohol and improved chlorine resistance compared to commonly interfacial polymerized ones with PEI and TMC. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45422.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2017
·Vol. 134
·期 20
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IF 1.86
Xiaobin Huang,Yinxian Peng,Jianming Pan,Wenli Zhang,Wei Zhou,Hengjia Zhu,Shucheng Liu
Fast development of oil industry and cargo distribution make accidental oil spills more possible in the course of transportation. Here we fabricated a hydrophobic macroporous phenol resin poly high internal phase emulsions (poly-HIPEs) to adsorb oil pollution. To improve hydrophobic property and adsorption ability of the poly-HIPEs, we adopted a facile way to modify the poly-HIPEs that Fe 3 O 4 nanoparticles act as magnetic particles to make the poly-HIPEs magnetic and 1-dodecanethiol as hydrophobic monomer grafted to the surface to strengthen the hydrophobicity with dopamine as the adhesive. As a result, we succeed in making the poly-HIPEs superhydrophobic and their contact angle transforms from 107° to 150°. After the oil adsorption experiment, the adsorption capacity of the modified poly-HIPEs is obviously better than the original poly-HIPEs which is about ten times than original weight of material, what's more, the final products also have good recycle ability after ten times' employing, which makes it a promising candidate material for use in oil-spill cleanups. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44731.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2017
·Vol. 134
·期 23
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IF 1.86
Shuai Han,Ting Wang,Bin Li
A novel TiO 2 hydrogel cage model was built for the removal of methylene blue (MB), an organic pollutant. This TiO 2 hydrogel cage was prepared with the biomass materials of hydroxyethyl cellulose (HEC) and carboxymethyl cellulose (CMC), and this hydrogel cage structure was characterized by scanning electron microscopy, transmission electron microscopy, and X-ray diffraction. The contents of the encased TiO 2 and its swelling properties with different CMC proportions of this hydrogel cage were studied to obtain a suitable crosslinking network structure and optimal synthesis conditions. Compared to an equivalent amount of pure TiO 2 , the much higher removal efficiency of MB with our prepared TiO 2 hydrogel cage was attributed to the synergistic effect of the photocatalytic degradation for TiO 2 and the adsorption enrichment for cellulose hydrogels. Furthermore, the adsorption kinetics of the intraparticle diffusion model were used to study the adsorption enrichment process of the TiO 2 hydrogel cage. In addition, on the basis of the results of photocatalytic degradation and recycling experiments, excellent performances with respect to self-cleaning, regenerative ability, and easy recovery, were shown for this HEC–TiO 2 –CMC cage material, which demonstrated ideal application potential for MB removal. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44925.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2016
·Vol. 134
·期 14
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IF 1.866
Bo Jiang,Aiping Zhu,Chaoqun Zhang,Yanxiang Li
The use of glass fibers (GFs), molybdenum disulfide (MoS 2 ), and talc was evaluated to reinforce polytetrafluoroethylene (PTFE) for potential applications in automobile shock absorber pistons. The orthogonal experiment results show that the optimal GF/MoS 2 /talc/PTFE weight ratio was 2:3:3:92 for the PTFE composite; this ratio resulted in better mechanical properties, hardness, low linear expansion, and wear rate. Chemical coupling and high-temperature activation treatment on the surface of GF greatly enhanced the interfacial adhesion between the PTFE matrix and GF, as revealed by atomic force microscopy analysis. This resulted in reductions in the wear rate and linear expansion coefficient by two orders of magnitude compared with that of PTFE. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44668.
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